Car Battery Jump Starter, TOPDON JS3000 12V 3000A Battery Booster Jump Starter Pack for Up to 9L Gas/ 7L Diesel Engines, Portable Car Charger with Handle Jumper Cable and EVA Protection Case

Okay read instructions, this will not start a fully discharged battery. Had to partially charge an ambulances batteries (very large twin connected batteries), which had been left to slowly discharge whilst awaiting other work on it. After partially charging batteries for a few days, gave TOPDON JS3000 a go and on the second press of the 'booster' button the Ambulance sprung to life. It does exact.y what it says on the box and more, very pleased with my purchase. Very nice piece of kit that is super easy to use, quite compact for its power output. The JS3000 comes charged at 50%, so takes about an hour or so to fully charge 100%. It comes with a built in LED light with various settings (strobe, flashing etc), so at night no problem if you should breakdown. There's also charging ports for phones, tablets, laptops etc. It's quite sturdy and should comes in it's own storage case with instructions on use. The clamps are pretty heavy duty and the gage of copper is more than adequate for the job at hand. I'll post some photos later...

My car battery was on it's last legs as it wouldn't hold the charge for more than a week. Plus, the car alternator was not the most efficient after 20yrs of service! However, I did not have the time to search for the replacement battery as to where best to purchase so I purchased the TOPDON 3000A battery booster as a reserve for trips long or short. What a wonderful product the TOPDON is as I had to call upon it's use several times and got me out of trouble away from home. Whilst being weighty, the JS3000 is actually quite compact and comes with it's own carry case keeping all leads and accessories in one place. The jump lead is simple - there is only one-way to plug into the charger by way of the asymmetric plug shape (avoids any errors), and the sturdy jump crocodile clips that connect to the battery. Operation is straightforward - turn on, and press the booster button which prepares the charger to give the boost. My car is a 5.5litre V8 engine and therefore the electrical current required to turn the engine over is quite substantial. Using the JS3000, the engine turned over with no issues, just like having a full charged battery. Love it! I now carry this with me on all journeys and compact enhough to give me peace of mind. Highly recommended!

Fantastic pice of equipment, well worth getting. Starts the car first time every time. Very easy to setup and use.

This topdon car battery starter is great for getting your car van truck started its peace of mind doing it yourself rather than calling other services that will cost you a lot of money. its very easy to use has great power and the battery life is great within two minutes you can start your car and be on the road again.

We own a Citroen Relay camper conversion & travel across the UK & occasionally into Europe occasionally, We carry heavy duty jump leads in case of battery problems, but some of the remote places we get too, means there's very little help available should we need it! this Topdon JS3000 has solved the problem! It's an exceptional bit of kit,we've helped out numerous other campers with battery problems since we've had it van three times, with almost zero battery, a panda, and my camper, every time I was amazed by the speed with which the starter goes, in a moment it starts anything. It comes in a sturdy and comfortable case, excellent cables, well-insulated and soft, low weight and a series of other opportunities such as light and USB sockets to power tablets, PCs, which I have not tested because for me its main purpose is starting up, a purpose that it does with great simplicity and efficiency. You really can't put a price on the peace of mind this unit gives us! I'd highly recommend this to absolutely anyone without worry! We've been that impressed with Topdon we've also purchased the Artidiag800BT Scan tool & the BT200 Battery tester, all really are "Top Quality"

How many if us get caught out with a totally flat battery or the capacity is too low to start your engine? These booster packs are a godsend and so easy to use

Great product as always from top don Started a 3ltr diesel easy no problem

I recently purchased the TOPDON JS3000 Jump Starter and I couldn’t be happier with it. This unit is extremely powerful, capable of starting up to 9L gas and 7L diesel engines with ease. I tested it on a cold morning when my car battery was completely dead, and it fired the engine up instantly without any struggle. The design is very solid and well thought out. The sturdy handle makes it easy to carry, and the included EVA protection case keeps everything neatly stored and protected. The jumper cables are heavy-duty and feel much more reliable compared to cheaper alternatives I’ve used in the past. I also appreciate that it doubles as a portable charger, so I can keep phones and devices topped up when travelling. The safety features are another big plus – reverse polarity and spark-proof protection give extra peace of mind, especially if someone less experienced needs to use it. Overall, the TOPDON JS3000 is a powerful, well-built, and dependable jump starter that I would recommend to anyone. It’s great value for the quality, and it’s reassuring knowing I have this in my car in case of emergencies.